A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5910-00-496-9671
NSN 6130-01-186-2659
NSN 5905-01-500-4666
NSN 4140-00-287-9199
NSN 5990-01-232-6018
NSN 6645-00-148-1798
NSN 5935-01-211-6986
NSN 5965-00-005-5252
NSN 5930-01-294-5872
NSN 5990-01-383-9780
NSN 5990-01-116-2181
NSN 5910-00-490-8749